A perfect electromagnetic conductor (PEMC) sphere illuminated by linearly-polarized plane
progressive waves is known to experience a positive/repulsive force regardless of the …

The concept of a single-beam acoustical tweezer device which can simultaneously trap
microparticles at different points is proposed and demonstrated through computational …

Based on the finite series method, the Gaussian standing or quasi-standing beam is
expressed in terms of spherical wave functions and a weighting parameter, which describe …

Stemming from the Rayleigh-Sommerfeld surface integral, the addition theorems for the
spherical wave and Legendre functions, and a weighting function describing the behavior of …

In this work, counterintuitive effects such as the generation of an axial (ie, long the direction
of wave motion) zero-energy flux density (ie, axial Poynting singularity) and reverse (ie …

Partial-wave series expansions (PWSEs) satisfying the Helmholtz equation in spherical
coordinates are derived for circular spherically focused piston (ie, apodized by a uniform …

The use of ultrasonic transducers with a central hollow is suggested for improved single-
beam acoustical tweezers applications. Within the framework of the Fresnel-Kirchhoff …

The interaction of a Gaussian beam with a particle that is located off-axially is a fundamental
problem encountered across many scientific fields. This paper provides a viable theoretical …

Making use of the addition theorem for the cylindrical wave functions and the complex-
source-point method in cylindrical coordinates, an exact solution to the Helmholtz equation …

Vortex-wave beams are beams that carry angular momentum. Their specific feature is a ring-
like transverse distribution of wave intensity with zero intensity at the axis. A method for …